Malicious PDF — malware analysis report

Static analysis result for SHA-256 3145186c152bb390…

MALICIOUS

PDF

38.7 KB Created: 2020-10-01 03:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c76f1fc49d27f49f6acd6bd3d225444a SHA-1: fbc258865e79a6dce1282dced7d03bc349d9ccaf SHA-256: 3145186c152bb390e065f83b8f4638b934d3c0ca313cf8261529792644fab981
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/strik?keyword=astrophysics+for+someone+in+a+hurry+pdf In PDF document text
    • https://site-1037214.mozfiles.com/files/1037214/72246981965.pdfIn PDF document text
    • https://site-1036745.mozfiles.com/files/1036745/554163897.pdfIn PDF document text
    • https://site-1039150.mozfiles.com/files/1039150/rezixepewam.pdfIn PDF document text
    • http://nolom.shopscarletgypsies.com/uploads/1/3/0/7/130776485/kazelakik.pdfIn PDF document text
    • https://site-1036833.mozfiles.com/files/1036833/zemerawufew.pdfIn PDF document text
    • https://site-1038932.mozfiles.com/files/1038932/rixupudasasoridad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c05f5b0e-6c29-4fa1-a350-94620cf477b2/4855689739.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97710c06-a791-44d8-a369-766fd2c8ad4b/70110208693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50bb4f0d-e262-4aa2-aaf7-7fa88c37bed4/12752034149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60187c68-eba2-49e5-a16a-ddb7eb9a435c/99723730483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d50fb6b2-013e-497b-a589-3b7b5f79da2f/pozopototumopumazudapum.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000590e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x590E 5456 bytes
SHA-256: 71ad4b641b96f1e5df483ec06deccee7b24d6b26d50efc9e39ef07003ad3b613
font_01_sfnt_off00006b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7F 10112 bytes
SHA-256: c3277c5b92c55f0b4dedb61894d83a3254053970424f4c03ed53c7b3ccba3769

Open this report in the interactive analyzer, or submit your own file for analysis.